USDA and ITIS list four subspecies.
subsp. diffusa: found in OR,CA, NV
subsp. longistylis: found wNA outside CA
subsp. scleranthifolia : wUS (Rockies)
subsp. subcarinata: wUS
Note very narrow leaves pointed at tips. Stemless, Villous ovary.
west North Cascades, Olympics, Mt. Rainier
TRAIL: Goat Mt.; Easy Pass; Mt. Townsend; Skyline Trail
HABITAT: alpine talus
ELEVATION: 1,968 m (6,457 ft); 1,995 m (6,550 ft); 1,850 m (6,070 ft); 1906 m (6252 ft); 1,870 m (6,145 ft)
BLOOM TIME: 03-AUG; 11-AUG; 18-JUN; 17-JUN